52 



NOTES, 



The shell here figured was received by me from Mr. Hugh Fulton, of 

 216, Fulham Road, London, under the name of Corasia psittacina, Desh., but 

 on comparison with the description and figure of that species, "Journal de 

 Conchyliologie," ix., (1861), p. 350, t. 16, f. 3-5, it was evident that the two 

 shells were distinct, and this opinion wasconfirmad by an examination of the 

 specimens of Corasia psittacina in the British Museum collection. Although 

 undoubtedly belonging to the phylum of Corasia psittdcina, the characters 

 which separate Corasia laurae from that species, are sufficient to warrant its 

 being raised to specific rank, and as it does not appear to have been previously 

 characterized, I venture to publish it as a new species. It differs from 

 Corasia psittacina in having the whorls more flattened ; it has an acute 

 compressed keel which is crenulated above, while in Corasia psittacina, the 

 periphery is rounded and sub-angular; the last whorl is less widened towards 

 the aperture, more contracted behind the peristome, and abruptly descending 

 in front ; the aperture is more triangular in outline, the margins are more 

 approximating, and the columellar margin is more arcuate and less sloping. 

 AH the specimens which Mr. I'ulton obligingly showed me, six or seven in 

 number, agreed in the above-noted characters, but, as already indicated, some 

 variation in size was observable. This beautiful species is named in honour 

 of Miss Laura Andrew. — (Science-Gossip, New Series, vol. iii., August, iSg6, 

 p. 57. By kind permission of the Editor). 



REVIEWS. 



A Monograph of the Land and Freshwater Mollusca of the British 

 Isles, by J. W. T.^vlou, F.L.S., Part III. Taylor Bros., Leeds, 

 pp. 129-192, figs. 287-377 (6/-). 



The same care and attention to detail on the scientific side and the same 

 excellency as regards artistic production which has, up to the present, 

 characterized this Monograph, is once more evident in the present number. 



:m^ 



i?. 





k 



opn- 

 " Fig. 311." Eye oi Helix pomatia, 

 highly magnified (after Simroth). c., 

 inner cornea; cu., cutis; f./.,crystaline 

 lens; ep., epithelium, becoming thin 

 and transparent, and forming the 

 outer cornea ; 0. m., outer membrane 

 or sclera; op. n., optic nerve; ret., 

 retina ; 1. 11., tentacular nerve. 



" Fig. 3J7. Uiucst of Anodonta 

 cygnea, highly magnified (after Sim- 

 roth). aud. «., auditory nerve ; c. t. c., 

 connective tissue cells; cu., cuticle or 

 enclosing membrane ; >;;., celiatedand 

 sensory epithelial cells, supported 

 upon cellular tissue ; ot., otolith. 



The instalment is again devoted to those general considerations which are so 

 useful to the student of malacology and so absolutely necessary, one would 

 say, to those who wish to work at our British non-marine shells, but who 



